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mote1985 [20]
3 years ago
7

Consider the equation: 3(–4n – 9) = 21 Use the distributive property and properties of equality to solve for n.

Mathematics
2 answers:
Taya2010 [7]3 years ago
5 0
3(–4n – 9) = 21
Apply the distributive property.

-12n - 27 = 21
Apply the addition property of equality (add 27).

-12n = 48
Apply the division prop.of equality (divide by -12)

n = -4
Final answer!
galben [10]3 years ago
3 0

Answer:

N = -4

Step-by-step explanation:

3(-4n - 9) = 21

3(-4(-4) = 16 - 9) = 21 , two negatives multiplied makes a positive

3(16 - 9 = 7) = 21

3(7) = 21!

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